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12.7 Exercises

1. Find and correct errors if any. What will be the output?

   struct node {
        int id;
        int score;
   }
   
   #include <stdio.h>
   main()
   {    struct node *px, x, y;
        px = &x;
        while (scanf("%d %d", px.id, px.score) != EOF)
             printf("%d   %d\n", *px.id, *px.score);
   }

2. Define a data structure, intflt, that will allow one to store either an integer or a float. Read strings and convert them to either integers or floats depending on whether there is a fractional part present. Store the resulting values in an intflt type array. When the input is terminated, print the stored values.